Actuating mechanism for concentrators.



No. 783,342. PATENTED FEB. 21, 1-905. A. R. WILE'LEY.-

ACTUATING MEGHANISM FOR GONCBNTRATORS.

APPLICATION FILED JUNI: 14. 1898. RBNBWED D110. 24. 1904.

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PATENTED PEB. 2l, 1905.

A. R. WILFLEY.

ACTUATING MEGHANISM POR GONGENTRATORS.

APPLIGATION FILED JUNE 14. 189s. nmmwm DB0. 24, 1904.

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, wem Foz- Z @Ma/,wax 351g Ho/anm Patented February 21, 1905.,

ARTHUR R. VVILFLEY, OF DENVER, COLORADO.

ACTUATING IVIECHANISIVI FOR CONCENTRATOFS.

SPECIFICATION forming part of Letters Patent No. 783,342, dated February 21, 1905.

Application filed June 14, 1898. Renewed December 24, 1904. Serial No. 238 227.

To all whom t may concern.'

Be it known that I, ARTHUR R. WILFLEY, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Actuating Mechanism for Ooncentrators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in actuating mechanism for concentrators; and it consists of the features, arrangements, and combinations hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a top view of my improved apparatus, the belt being omitted. Fig. 2 is a side elevation of the table, shown partly in section. Fig. 3 is a section taken on the line .e e, Fig. 1. Fig. 4 is a top or plan view of the operatingy mechanism, the parts being shown on a larger scale. Fig. 5 is a section taken on the line m ne, Fig. 4. Fig. 6 is a horizontal section taken on the line y y,

. Fig. 5.

Similar reference characters indicating corresponding parts in the views, let the numeral 5 designate what is ordinarily termed a beltmachine, comprising a table 5, end drums 5", and an endless belt 5d, operated by a worm 6, engaging a gear-wheel 7. The worm-shaft is journaled in a suitable stationary frame 8 and is provided with a cone-pulley 9, connected with a pulley 1() on the motor-shaft 12 by means of a belt 13. The mechanism for giving the belt and table a laterally-reciprocating movement will now be described, special reference being made to Figs. 4, 5, and 6.

Upon a stationary frame 14 is mounted a draw-bar 15, comprising two axial stems 15 and 150, and a yoke 15d, connecting the said stems. Mounted on the yoke 15d is a shaft or bearing 16, while a shaft 17 is mounted on the stationary bed 14. Between these shafts is located a vertically-movable horizontal shaft 18, carried by the toggle arms or members 19 and 20. There are two arms 19 interposed between the shafts 16 and- 18 and two arms 20 located between the shafts 17 and 18.

Mounted on upright arms 14 of the bed 14 is a crank-shaft 21. The crank 21a of this shaft is connected with the shaft 18 by a pitman 22. The crank-shaft is rotated by connecting a pulley 23 thereon with any suitable motor. As the crank-shaft is rotated the shaft 18 is raised and lowered and the reciprocating movement imparted to the draw-bar 15 and the concentrating apparatus 5, with which the draw-bar is connected. Aspring 24 is interposed between a collar 25, mounted on the bed 14, and another similar collar, 26, fast ou the draw-bar. The length of the draw-bars stroke is regulated by adjusting the verticallymovable block 142, in which the shaft 17 is made fast. This block is located between the two toggle members 2O and is adapted to slide freely vertically on a post 14, formed integral with the bed 14. The upper extremity of the block 142 is provided with a horizontal lug 14d, apertured to receive a bolt 27, screwed into the top of the post 14C. This bolt is threaded to receive two nuts, which engage the lug 14d on opposite sides. The vertical position of the block, and consequently that of the shaft 17, is regulated by the adjustment of these nuts.

The table 5 is transversely inclined, and a trough 28 is arranged along its upper edge, just above the belt 5d. This trough is separated by a partition 26"L into two compartments 28c and 281. The compartment 2%c is farther to the right. (See Fig. 2.) Into this last-named compartment is fed the material to be treated in the form of pulp. The pure water is discharged into the compartment 28d. The pulp and water pass to the moving belt through apertures formed in the trough. Hence the pulp is distributed upon the upper right-hand corner of the belt, (see Fig. 2,) which is moving in the direction indicated by the arrow. The reciprocation of the belt and table by the mechanism shown in Figs. 4, 5, and 6 is in a direction at'right angles to the movement of the belt.

The special object of this invention is the IOO toggle-joint is to first impart a sudden impulse backward and then cause it to decrease gradually in speed until the limit of the stroke is reached, while when it is moving in the opposite direction, or toward the right, the tendency of the toggle is to cause it to start slowly and gradually increase in speed until it reaches the limit of its stroke. The normal result of the toggle movement is only approximately true in this case by reason of the action of the operating-crank, and the stop of the table is therefore only approximately sudden when it reaches its limit of movement toward the right. For all practical purposes, however, the stop may be called a sudden7 stop and will be so termed in this specification, since substantially the same result would be accomplished by bumping the table against a stationary object when vthe table is traveling in the direction toward which it is desired to discharge the gangue and in a direction different from that in which.

the belt is traveling. This sudden stop carries the gangue over the lower edge of the belt, while the liner mineral particles or slimes are carried over the end of the table by the moving belt. I have found by experiment that the gangue, whose particles are coarser than the fine mineral particles or slimes, (the saving of which this invention is designed to effect,) is acted upon by the sudden stopping of the table to a much greater extent than the `mineral particles which naturally assume a position underneath the gangue by virtue of their greater specific gravity. In other words, the gangue is carried downwardly over the lower edge of the belt by the sudden stopping of the table during each reciprocation, while the line mineral particles lying close to the belt are practically undisturbed thereby and are carried along with the belt and discharged at the end of the table.

It will be observed that the ordinary bumping-tables are so arranged that the table is bumped or suddenly stopped when moving in the direction toward which the mineral is traveling and are employed for the purpose of giving the mineral an impetus which shall separate it from the gangue, while in my construction the table is stopped suddenly when moving in a direction different from that in which the mineral is traveling and for the purpose of imparting a separating' impetus to the gangue.

In the ordinary belt-machine the lateral movement is an even or steady reciprocation for the purpose of agitating the material and allowing the mineral particles to settle, the gangue being separated therefrom by the action or force of the water alone. In the effort to do this effectually the transverse inclinationof the belt is made considerable and much of the'slimes or finer mineral particles are oftentimes carried away with the water by reason of said inclination. By employing an operating mechanism adapted or whose tendency is to impart a separating impetus to the gangue to aid or supplement the separating action of the water I am enabled to use a belt'whose inclination varies only slightly from a horizontal plane. This feature is conducive to the holding of the slimes on the belt until they are carried over the end of the table and discharged, as heretofore explained.

To the belt frame or table is bolted a coupling-plate 30, adapted to connect the draw-bar extremity with the table. This extremity of the draw-bar is shouldered, as shown at 15g, to engage the plate, being located between the plate and the table. The coupling-plate is provided with a vertical open slot 30, extending downwardly from the reduced neck 15h, upon which the coupling-plate is adapted to slide freely to permit the adjustment of the table for the purpose of regulating its transverse inclination. The washer 26 bears against the coupling-plate and holds the parts in operative relation.

Having thus described my invention, what I claim isl. The combination with an open-centered spring-actuated yoke having guide projections adapted to slide in bearings, of a driveshaft, and toggle mechanism located within the yoke and connected with the drive-shaft for actuating the yoke.

2. The combination with a draw-bar constructed and adapted to slide in suitable bearings, said draw-bar comprising a pair of axial stems, and an open-centered yoke connecting said stems, and a spiral spring mounted on one of said stems, of a drive-shaft, and toggle mechanism located within the yoke and connected with the drive-shaft for actuating the draw-bar.

3. The combination with a draw-bar constructed and adapted to slide in suitable bearings, said draw-bar comprising a pair of axial stems and a yo'ke connecting said stems, and a spiral spring mounted on one of said stems, of a drive-shaft, toggle-arms connected with a stationary support and with said draw-bar, a shaft interposed between and carried by said toggle-arms, said arms and shaft located within the yoke of the draw-bar, and a pitman operated by the drive-shaft and connecting the other shaft thereto.

4. The combination with a draw-bar constructed andadapted to slide in suitable bearings, said draw-bar comprising end stems and intermediate yoke, and a spiral spring on one of the stems, of a drive-shaft, toggle-arms, and interposed shaft located within the open center of the yoke, a pitman driven by the drive-shaft and connected to the shaft between the toggle-arms, a stationary post, and a vertically-movable block adjustable with respect to said post and carrying one end of the toggle.

5. The combination with a draw-bar constructed and adapted to slide in suitable bearings, said draw-bar comprising end stems, and intermediate yoke, and a spiral spring on one of the stems, of a drive-shaft, toggle-arms, interposed shaft, a pitman driven by the driveshaft and connected to the shaft between the toggle-arms, a stationary post, and a Verticall y-movable block adjustable with respect to said post and carrying one end of the toggle, said toggle-arms, interposed shaft, post and block located within and encircled by the yoke of the draw-bar whereby the parts are compactly arranged and in direct line with the application of the power.

6. The combination with a draw-bar constructed and adapted to slide in suitable bearings, said draw-bar comprising a pair oi' axial stems and an open-centered yoke connecting said stems, of a drive-shaft, toggle-arms connected with a stationary support and with said draw-bar, a shaft interposed between and carried by said toggle-arms, said arms and shaft l located within the yoke of the draw-bar, and a pitman operated by the drive-shaft and eX- tending to the other shaft.

In testimony whereof I aiiiX my signature in presence of two witnesses.

ARTHUR R. VILFLEY.

fitnessesz Y EDITH HIMswoR'rH, A. J. OBRIEN. 

